condition mean min max ZT0-3 0.02163005 0.02163005 0.02163005 ZT4-7 0.0128728 0.0128728 0.0128728 ZT8-11 0.01026625 0.01026625 0.01026625 ZT12-15 0.0168978 0.0168978 0.0168978 ZT16-19 0.022506400000000003 0.022506400000000003 0.022506400000000003 ZT20-23 0.0055659 0.0055659 0.0055659